| Patient without palsy (n = 56) | Patient with palsy (n = 18) | OR | p |
---|---|---|---|---|
Average Pavlov ratio < 0.65 | 10 (17.9) | 8 (44.4) | 3.68 | 0.027 |
Level of compression in Preoperative MRI (%) | Â | Â | Â | Â |
   C2/3 (%) | 3 (5.4) | 1 (5.6) | 1.039 | 0.974 |
   C3/4 (%) | 32 (57.1) | 16 (88.9) | 6 | 0.025 |
   C4/5 (%) | 40 (71.4) | 16 (88.9) | 3.2 | 0.149 |
   C5/6 (%) | 42 (75.0) | 10 (55.6) | 0.417 | 0.122 |
   C6/7 (%) | 25 (44.6) | 10 (55.6) | 1.55 | 0.421 |
   C7/T1 (%) | 1 (1.8) | 0 (0) |  |  |
3 or more compression levels in MRI (%) | 27 (48.2) | 13 (72.2) | 2.79 | 0.082 |
HIA in T2 weighted MRI image (%) | 44 (78.6) | 11 (61.1) | 0.955 | 0.943 |